I LOVE making my boyfriend hard. It makes me feel really good when I know he's hard because of me...
and I have NO problem with him getting an erection anytime, in public or private. It's something to smile about.
Now that I think of it though, when I was an evangelical Christian and waiting till marriage (long in the past), I remember when I experienced my first hard-on. Meaning, my bf at the time got one while we were making out... and I was just like, WHAT is that???
I didn't say anything, since he still had his jeans on and I thought maybe it was his belt or something... but I kinda wish he had made a joke about it and not been so shy!
Have fun!!!